diff --git a/ObsoleteFiles.inc b/ObsoleteFiles.inc
--- a/ObsoleteFiles.inc
+++ b/ObsoleteFiles.inc
@@ -51,6 +51,9 @@
 #   xargs -n1 | sort | uniq -d;
 # done
 
+# 20240729: rename quick_exit_test to exit_test
+OLD_FILES+=usr/tests/lib/libc/stdlib/quick_exit_test
+
 # 20240729: retire ifaddr_byindex
 OLD_FILES+=usr/share/man/man9/ifaddr_byindex.9.gz
 
diff --git a/lib/libc/tests/stdlib/Makefile b/lib/libc/tests/stdlib/Makefile
--- a/lib/libc/tests/stdlib/Makefile
+++ b/lib/libc/tests/stdlib/Makefile
@@ -3,6 +3,7 @@
 ATF_TESTS_C+=		clearenv_test
 ATF_TESTS_C+=		dynthr_test
 ATF_TESTS_C+=		heapsort_test
+ATF_TESTS_C+=		libc_exit_test
 ATF_TESTS_C+=		mergesort_test
 ATF_TESTS_C+=		qsort_test
 .if ${COMPILER_TYPE} == "clang"
@@ -11,7 +12,6 @@
 ATF_TESTS_C+=		qsort_r_compat_test
 ATF_TESTS_C+=		qsort_r_test
 ATF_TESTS_C+=		qsort_s_test
-ATF_TESTS_C+=		quick_exit_test
 ATF_TESTS_C+=		set_constraint_handler_s_test
 ATF_TESTS_C+=		strfmon_test
 ATF_TESTS_C+=		tsearch_test
@@ -75,7 +75,6 @@
 LIBADD.${t}+=	netbsd util
 .endfor
 
-LIBADD.libc_exit_test+=		pthread
 LIBADD.strtod_test+=		m
 
 SUBDIR+=	dynthr_mod
diff --git a/lib/libc/tests/stdlib/quick_exit_test.c b/lib/libc/tests/stdlib/libc_exit_test.c
rename from lib/libc/tests/stdlib/quick_exit_test.c
rename to lib/libc/tests/stdlib/libc_exit_test.c
--- a/lib/libc/tests/stdlib/quick_exit_test.c
+++ b/lib/libc/tests/stdlib/libc_exit_test.c
@@ -12,32 +12,36 @@
 
 #include <atf-c.h>
 
-static void func_a(void)
+static void
+func_a(void)
 {
 	if (write(STDOUT_FILENO, "a", 1) != 1)
 		_Exit(1);
 }
 
-static void func_b(void)
+static void
+func_b(void)
 {
 	if (write(STDOUT_FILENO, "b", 1) != 1)
 		_Exit(1);
 }
 
-static void func_c(void)
+static void
+func_c(void)
 {
 	if (write(STDOUT_FILENO, "c", 1) != 1)
 		_Exit(1);
 }
 
-static void child(void)
+static void
+child(void)
 {
-	// this will be received by the parent
+	/* this will be received by the parent */
 	printf("hello, ");
 	fflush(stdout);
-	// this won't, because quick_exit() does not flush
+	/* this won't, because quick_exit() does not flush */
 	printf("world");
-	// these will be called in reverse order, producing "abc"
+	/* these will be called in reverse order, producing "abc" */
 	if (at_quick_exit(func_c) != 0 ||
 	    at_quick_exit(func_b) != 0 ||
 	    at_quick_exit(func_a) != 0)